The death penalty Essay Example for Free

The death penalty Essay During act1 the play starts were a group of people in Salem go dancing in the woods with a slave woman called Tituba, Reverrand Parris sees this but is spotted doing so, the girls run away.  The next day reverrand Parris is beside Betty who is ill, the doctor suspects the girl has been taken over by supernatural forces. Parris questions Abigail, who was with her, he asks her about witchcraft and Tituba, he then sends for reverrand Hale, an authority on witchcraft. Mr Mrs Putnam see how Betty is and says that she sent her daughter Ruth to raise spirits of her dead babies to see who murdered them so that is another reason for the happenings in the woods that night. Later the girls who were dancing in the woods joined Betty beside her bedside, theyre all woried that they may be tried for witchraft. Abigail has them on their own, she slaps Betty to try to sustain her, she also worns the other girls not to breath a word of when she drank blood in the woods, she uses scare tactics. Abigail and Proctor starts talking about their affair and their affections for each other, while Betty is next to them in bed hearing every word they say, Betty then screams to stop them. Parris, Rebbecca, and Giles come to see whats happened with Betty, Rebbecca manages to restrain her. Parris wants to have a witch hunt, but proctor doesnt believe in witches, they start to argue. The Putnams continue to disagree with the rest of the towns people of Salem about land rights, which creates a lot of tension.  Reverrand Hale tries to wake Betty but doesnt succeed, he then turns to Abigail questions her about the witchery, in hesitation shes quick to accuse Tituba. She accuses two others, realises Titubas escape by naming others, she chants the names of the other girls in the villiage that she believes has seen the devil, Hale is pleased shes confessed and tells her to continue talking. Crucible: A melting pot where basic elements are mixed together to give an explosive force.  This is the title of the play, I think this title is very fitting with the contents of the play, it seems to be like when the characters (basic elements) are put together, they produce arguments, action, tension, fear(explosive force).  Arthur Millers background He was born in New York, 17th October 1915, he was brought up in the brooklyn area. His father owned a clothing factor which collapsed, following this lead Arthur Miller to produce the play Death of a salesman and A view from a bridge set in Brooklyn. During his college years he managed to write plays although he had college and other jobs at the same time.  His first success was All my sons which was about a father forced to realise dangerous moral comprimises changing the American dream of wealth. His biggest hit was Death of a salesman in 1949 which won the Pulitzer Prize. The crucible won an award in 1953, but wasnt an immediate commercial success, this was the time of Mc Carthyism. Mc Carthyism is an issue in which to consider in the play, with Salem being a very theocratic society. In the arrly 1950s Joseph McCarthy, a senator, managed to create a national campaign against communists, ex-communists and anyone who assoiated with them. He made many unfounded statements about the numbers of secret communists in important positions, as chairman of a senate commitee he interrogated many witnesses and tried to make them inform on friends and colleagues. As the anti-communist hysteria increased many people were hounded from their jobs or were prevented from working. McCarthys unproven accusations and aggresive interrogations gradually brought him into disrepute. Witchcraft is an important scene in which act 1 is dramatic, witchcraft was a serious matter in those days, and even more in a religious community. Witchery led to deaths, fall outs, false accusations, murders, tortures, exectutions, being burnt etc which if used in the play, which it was, it can be used to build extreme dramatic situations which can have a powerful effect on the audience. Witches were thaught to be in league with the devil, who was their master, the devil/satan is believed to roam the world for human souls to tempt into hell. He is a supreme enemy of everything thats good and holy. The Christian churches persued and persicuted supposed witches. A common test for a person accused for being a witch was pricking with a needle. All witches were supposed to have somewhere on their bodies, a mark made by the devil himself which was insensitive to pain. Any who were found guilty suffered the death penalty. Whichcraft trials in Salem were common, I think Arthur Miller used it in his play to worry the audience into thinking death was appartant and inevitable, when witchery was present. Whenever death is present in a play, the dramatic tension is bound to rise because death is a most serious matter to anyone. If ever witchery or satanic happenings occured in Salem, it would most probably be taken to court until someone was proven guilty and hanged, maybe Arthur Miller knew this and thaught that the audience would know it too? therefore rising the dramatic tension in the play.

Causes and Solutions for Hurricanes

Causes and Solutions for Hurricanes In the south Pacific they are called cyclones. In the northern Pacific Ocean they are called typhoons. In the Atlantic Ocean areas they are called hurricanes. One thing is for certain in regard to these phenomenon, they can all be extremely dangerous. The only major difference between all of them is the locations in which they occur. For the purposes of this paper we will refer to the phenomena as hurricanes. The seasons for tropical cyclones vary depending on their location on Earth. Most tropical cyclones form between May to October but in the pacific there have been storms form as early as January. Hurricanes are some of the most powerful weather events on the planet. They can cause millions of dollars in property damage and have the potential to cause the loss of human life on a large scale. These monstrosities, especially in the Atlantic Ocean, can grow to enormous proportions and cover many square miles. These storms usually forms in the tropical regions of an ocean hence the name tropical cyclone. They are fast rotating systems that arecharacterized by low pressure centers, strong winds, and a spiral storms that produce heavy rains. They can produce winds in excess of 155 miles per hour and have been recorded gusting as high as 210 mph. Hurricanes require large bodies of warm water in order to form. There are seven different categories for â€Å"hurricanes.† The first category is a tropical depression in which winds are less than 40 miles per hour and there is no formed â€Å"eye† of the storm. They also usually lack the spiral shape of stronger storms, howeve r, they are still low pressure systems at this point. The next category is a tropical storm in which winds range from 40 mph to 73 mph. It is at this point when the storm begins to form its spiral shape and winds begin to move in a cyclonic motion. In a few instances the storm has actually formed an eye, although it is usually not very pronounced or developed. The next category is the first stage where a tropical cyclone officially becomes a hurricane or full tropical cyclone. The Saffir-Simpson scale is what is used to determine which one of the following categories a full hurricane falls into. The first is known as a category 1 storm where winds range from 74 mph to 95 mph and the winds can cause slight damage to well built homes and will likely cause power outages due to branches falling on power lines. Category 2 hurricanes have sustained wind speeds from 96 mph to 110 mph. In this category even well-built structures will sustained heavy roof damage as well as possible structura l damage. Power loss is almost certain to happen and stay out for days. Category 3 storms are the beginning of what are considered major hurricanes, meaning cyclones that are capable of causing massive damage and high loss of life. They have sustained winds from 111 mph to 129 mph. This is when many trees begin to snap and have the potential to turn into flying debris which can cause a large amount of damage to many of the buildings and windows. A category 4 storm has winds from 130 mph to 156 mph and will cause major damage such as total destruction of a building’s roof and possible full structural collapse. Large loss of life is expected during a storm as powerful as this. The final and most powerful classification of tropical cyclone is a category 5. These monstrosities have winds 157 mph and stronger. Damage should be expected to be widespread and utterly catastrophic. Power lines and other utilities are usually knocked out for weeks on end. This makes many rural areas un inhabitable for a decent amount of time. One of the most powerful storms ever recorded at landfall was Typhoon Haiyan which topped out at over 195 mph. This storm occurred in the Pacific Ocean near the Philippines. The loss of life was enormous killing almost 6300 people in the Philippines alone and as of 2014 they are still finding bodies. Another very powerful category 5 hurricane was Hurricane Andrew which made landfall in Florida as a category 5 and caused over 26 billion dollars in damage. One thing is for sure and that is that a tropical cyclone no matter what the category has the potential to cause major damage and can also cause loss of life. Many people do not heed the warnings when a â€Å"smaller† storm is approaching and they get caught in the path and ultimately lose their lives because of it. This is unfortunate, however, actions can be taken to prevent such things from happening. In recent years research has shown that with the warming of the earth tropical cyclones have started to produce more rainfall. In the past 100 years it has been determined that the warmer climate will produce an increase of 8% more water vapor for every 1 degree Celsius the temperature increases. More rainfall means a higher potential for flash flooding once the cyclone makes landfall which means more property damage as well as higher risk for loss of life Cyclone Ita is the most powerful storm to form in the southern Pacific Ocean in three years. The storm began around the Solomon Islands as a tropical depression on April 1st. It finally reached cyclone strength four days later. On the 10th it quickly gained strength to a category 5. It made landfall in the Cooktown/ Cape Flattery area in Queensland Australia on April 12th at 2200 (local time) as a category 4 storm. Upon Ita’s landfall the storm weakened very fast down to a category 1 storm. There was over $1 billion dollars in damage. One building was destroyed and 4 buildings were severely damaged in Cooktown. The damage also included large tracts of sugar cane and a banana plantation was completely destroyed. Cyclone Ita then began to move southeast maintaining gale-force winds the storm accelerated, eventually moving back to the ocean just north of a town called Mackay which is also in Queensland on April 13th. After it moved off of the land and back to the waters off the c oast it began to gain strength again as it combined with a low pressure system near New Zealand. It made landfall in New Zealand on the 17th of April and the inner eye wall collapsed which helped to dissipate the storm. The storm brought heavy rainfall and strong winds to the coast before finally destabilizing. The mitigation efforts taken by each area affected have their similarities as well as some differences. As the storm approached the Solomon Islands the authorities issued severe flood warnings along with cyclone watches. Many facilities in the area prepared for the worst by having backup plans in the event they were required to evacuate. The national hospital actually had to move over 500 patients to other areas due to the flooding that occurred. In Papua New Guinea, the National Weather Service issued tropical cyclone warnings for all island communities. It was decided that all schools and businesses were to remain closed for several days in Milne Bay and many of the residents were encouraged to stay safe indoors. Flooding did occur in this area as well and there was a bridge that was washed away. If the authorities had not issued the warnings to stay indoors and off the roads there may have been many more casualties. In Australia, the authorities issued cyclone warnings to all affe cted areas in an effort to minimize casualties since the storm was expected to be very strong at landfall. Due to the effectiveness of the pre-mitigation efforts there was minimal casualties. In the aftermath of this and other tropical cyclone events the best way to deal with all of the issues that arise is to have a well-known plan for emergency services as well as power companies. Hospitals should be prepared to receive many casualties like in the event mentioned earlier in the Solomon Islands. Emergency workers such as fire fighters and medical personnel must be available to Works Cited Hurricanes, Typhoons, Cyclones | UCAR University Corporation for Atmospheric Research. Hurricanes, Typhoons, Cyclones | UCAR University Corporation for Atmospheric Research. N.p., n.d. Web. 08 May 2014. Keegan, Bianca. Douglas and Cairns Shires on Tropical Cyclone Ita Alert as Storm Deluge Looms. CairnsPost. N.p., 10 Apr. 2014. Web. 08 May 2014. National Weather Service. National Weather Service Weather Forecast Office. Andrew. N.p., n.d. Web. 08 May 2014. National Weather Service. Saffir-Simpson Hurricane Wind Scale. Saffir-Simpson Hurricane Wind Scale. N.p., n.d. Web. 08 May 2014. Queensland Surveys Cyclone Ita Harm. BBC News. N.p., 12 Apr. 2014. Web. 08 May 2014. Tropical Cyclone Ita. Weather Forecast Reports. N.p., n.d. Web. 08 May 2014. Typhoon Haiyan (Yolanda). U.S. Agency for International Development. N.p., n.d. Web. 08 May 2014.

Ecommerce And Its Applications Information Technology Essay

Ecommerce And Its Applications Information Technology Essay We are in the age of Knowledge and consequently in the midst of an electronic revolution. The impact of which on the economy is much more powerful than caused by industrial revolution. With the inception of the web, organizations and individuals are more and more making use of E-Commerce to create new business ventures. The www is not only a source of information, but an astounding business opportunity as well. Online business is thriving and more and more corporate companies are joining the fray of electronic transaction. The era of E-Commerce has established a significant synergy between the use of digital info and computerized business. Introduction The Internets impact on people has been profound; particularly with respect to consumers, who are starting to use the Internet as a new medium to trade and purchase goods and services. It is a general concept covering any form of business transaction or information exchange executed using information and communication technologies. Electronic commerce is the most recent step in the evolution of business transactions. It replaces the swapping of money for goods or bartering (the swapping of goods for goods) with the exchange of information from computer to computer. Electronic commerce, or e-commerce as it is otherwise known, is a very broad terminology. E-commerce enables organizations of all sizes and in all market sectors to improve their competitiveness. It cuts across geographical boundaries and time zones to save time and costs, to open up new market opportunities and enable even the smallest of companies to compete globally. E-commerce spans established processes such as bar code scanning and electronic data interchange (EDI), as well as newer arrivals, electronic mail, the Internet, the World Wide Web and mobile electronic commerce. E-commerce is attractive because it reduces the cost of doing business. Sending a few bytes of data over a network is cheaper, faster and more convenient than sending a messenger or even making a phone call. E-commerce covers any form of business or administrative transactions or information exchange that is executed using any information and communications technology (ICT). Classification of E-Commerce by application: Electronic Markets Electronic Data Interchange (EDI) Internet Commerce Electronic Markets Present a range of offerings available in a market segment so that the purchaser can compare the prices of the offerings and make a purchase decision. Example: Airline Booking System. Electronic Data Interchange (EDI) It provides a standardized system, Communicated from one computer to another without the need for printed orders and invoices delays errors in paper handling. Example: EDI is used in the large market chains for transactions with their suppliers Internet Commerce It is use to advertise make sales of wide range of goods services.This application is for both business to business business to consumer transactions. Example: The purchase of goods that are then delivered by post or the booking of tickets that can be picked up by the clients when they arrive at the event Types of E-commerce:  · business to business  · business to consumer  · consumer to business  · consumer to consumer Business to Business: The really big business on the Internet and the World Wide Web isnt books and CDs but ball bearings, electronic components and other materials that businesses buy, sell and distribute to and from each other. Although this type of business to business trading may be new and attracting plenty of media and public attention, business to business has been trading by electronic means for nearly twenty-five years. The most famous method of business to business trading has to be the electronic data interchange (EDI) established for exchanging business information between companies that regularly did business with each other. Business to Consumer: Businesses selling to the general public typically through catalogs utilizing shopping cart software. By dollar volume, B2B takes the prize, however B2C is really what the average Joe has in mind with regards to ecommerce as a whole. Having a hard time finding a book? Need to purchase a custom, high-end computer system? How about a first class, all-inclusive trip to a tropical island? With the advent ecommerce, all three things can be purchased literally in minutes without human interaction. Consumer to Business: A consumer posts his project with a set budget online and within hours companies review the consumers requirements and bid on the project. The consumer reviews the bids and selects the company that will complete the project. Elance empowers consumers around the world by providing the meeting ground and platform for such transactions. Consumer to Consumer: It facilitates the online transaction of goods or services between two people. Though there is no visible intermediary involved but the parties cannot carry out the transactions without the platform which is provided by the online market maker such as eBay. There are many sites offering free classifieds, auctions, and forums where individuals can buy and sell thanks to online payment systems like PayPal where people can send and receive money online with ease. eBays auction service is a great example of where person-to-person transactions take place every day since 1995. E-Commerce applications Multimedia Content for E-Commerce Applications Multimedia Storage Servers E-Commerce Applications i. Client-Server Architecture in Electronic Commerce ii. Internal Processes of Multimedia Servers iii. Video Servers E-Commerce Information Delivery/Transport E-Commerce Applications Consumer Access Devices SCAN002 Conclusion The Web plays an expanding role just as it does in a consumer e-commerce. Business to business activity is still, and we believe will remain, the main area of electronic commerce activity. This covers everything from established communications between retailers and their suppliers, the electronic banking payment systems through to the new Internet based catalogue systems. In the future, all of us will conduct an ever-increasing number of business transactions on-line. Companies who implement solutions to conduct business on-line will stay competitive and responsive in this evolving market place.

Research Proposal: The Effect of Extra-Curricular Activities on Academi

Introduction Do extra-curricular activities have a positive or negative effect on a student’s academic performance? If they do, then why do schools take activities away from students at the first sign of academic troubles? If they are scientifically proven to be positive, then why are they not curricular rather than extra curricular? There are numerous influences that impact the academic performance of a student other than after school activities. However, this study will focus on the effect of extra curricular activities on academic performances. In many cases, participation in extra curricular activities positively influences attendance and connection to school. This study will investigate the impact of extra curricular activities that require a daily commitment over an extended period of time, greater than a month. Athletics is the dominant after school activity that requires a daily commitment; therefore, this study will involve student athletes as well as students who are invo lved in other extra curricular activities. Another reason why student athletes will be a large part of this study is that there may be a correlation between the skills necessary to succeed in athletics and academics (American Sports Institute, 1991). While most evidence in the literature proves that extra curricular activities improve academic performances, Solanco School District has no program supporting or promoting the link between the two. This study will examine the effects of participation in extra curricular activities on student academic performance at Solanco High School. Findings from this study could be examined by Solanco High School and similar school districts to support and promote programs of extra curricular activities at... ... as Researchers. 2005 Emmons, Leonard S (1995). Athletic participation and academic achievement: Can the two coexist? National Association of Secondary School Principals. NASSP Bulletin. Vol. 79, Iss. 574; p. 107. Libbey, Heather (2004). Measuring Student Relationships to School: Attachment, Bonding, Connectedness, and Engagement. The Journal of School Health. Vol. 74, Iss. 7, p. 274, 10 pgs. NEA Today (2004). See Ya After School. Vol. 22, Iss. 6, p. 13. Neill, James. www.wilderdom.com Parks & Recreation (2003). After-school programs help kids achieve. Vol. 38, Iss. 6; p. 15. Schneider, Timothy and Klotz, Jack. November 2000. The Impact of Music Education and Athletic Participation on Achievement. 36 pages. Seigle, Del. http://www.gifted.uconn.edu/siegle/research/Qualitative/qualquan.htm. 1979

The Health Care Puzzle :: Exploratory Essays Research Papers

The Health Care Puzzle Health care in the United States has improved immensely during the past century. Improved technology has finally allowed us to eliminate deadly disease from our society. Unfortunately, the technology is expensive and has put monetary burdens upon the care receivers. No longer can a middle class American afford the astronomical fees for lifesaving operations in the hospital. Because of this, health insurance, like car insurance, flood insurance or fire insurance, has been established to assure its participant that he or she is able to be provided with the best care possible. Many horrible stories by normal people have shown that it hasn't happened. Deserved health care has not been provided, and many "insured participants" have suffered because of this. The problems of health care in the United States include: questioning of cost reduction techniques, allegations of death and injury, competition between hospitals themselves, and legal loopholes in the system. It's no wonder that medic al care systems are under such scrutiny. One system in particular that has violated the system is the HMO, or Health Maintenance Organizations, a public provider which forces their patient to choose from an assortment of their physicians. Since their establishment, HMOs have gradually decreased the quality of patient health care significantly, especially in hospitals. Debates over the health care provided by HMOs have arisen in many cases. For an alarming majority, organizations like the HMO are the only affordable option for providing health care. Since most people could never afford such costs as expensive surgeries, they have turned to HMOs to provide them with care, paid via a monthly premium. A variety of services can be offered to patients in one familiar place. In addition, the doctors are good because they are screened before acceptance by other qualifying physicians. Procedures are also given more objectively, because of no extra fee incentives for the physicians in prepaid programs, where the goal is to lower costs. Also, costs are about the same for every visit, and claim forms are kept at a minimum. Another advantage of companies like HMO is that there is a familiarity between the physicians of the HMO group. Specialists of all kinds can relate to each other because they are in a cooperative working environment. In contrast, disadvanta ges exist with these health providers. Since patients depend on them for care, they must trust the HMO also. This means that their health can be damaged because of a doctor's faulty decision making, instead of the patient's.

Ch 18

Chapter 18 Ethers & Epoxides; Thiols and Sulfides Assigned Reading from McMurry: Read Sections 18. 1 through 18. 9; not responsible for â€Å"Focus on †¦ Epoxy Resins & Adhesives, pp. 697-698). Recommended Problems from McMurry: 18. 1a-e;18. 18. 2;18. 3a-d; 18. 4; 18. 5a-d; 18. 6a-b; 18. 7a-b; 18. 8; 18. 9; 18. 10; 18. 11; 18. 12a,b; 18. 13a,b; 18. 14a-c; 18. 16a-f; 18. 17; 18. 18; 18. 19a-c; 18. 20; 18. 21; 18. 22; 18. 23a-e; 18. 24a-I; 18. 25a-f; 18. 26a-d; 18. 27; 18. 28; 18. 29ad; 18. 30a-e; 18. 31; 18. 32; 18. 33; 18. 34; 18. 35a-d; 18. 36; 18. 37; 18. 38; 18. 39; 18. 40a,b; 18. 41a-d; 18. 2; 18. 43; 18. 44; 18. 45; 18. 45; 18. 46; 18. 47; 18. 48; 18. 49; 18. 51; 18. 52; 18. 53; 18. 54; 18. 551-e; 18. 56; 18. 57; 18. 58a-b; 18. 59a-b; 18. 60; 18. 61. 18. 1 Names and Properties of Ethers Method A: Simple ethers; alphabetize if two organic substituents. CH3–CH2–O–CH2–CH3 Diethyl ether Methyl propyl ether O CH3–CH2–CH2–O œCH3 CH3 Methyl phenyl ether SP 18. 01 Provide systematic names for the following ethers. CH3–CH2–O–CH2–CH2–CH2–CH3 O SP 18. 02 Provide structures for the following systematic names. Systematic name: Isopropyl phenyl ether Systematic name: Cyclohexyl ethyl etherMethod B: Other functional groups present, ether component is an â€Å"alkoxy† substituent. Alkoxy examples: methoxy -OCH3, ethoxy -OCH2CH3, propoxy -OCH2CH2CH3, etc. O C H3 O CH3 O C H3 para-Dimethoxybenzene 3-Methoxy-1-cyclopentene SP 18. 03 Provide systematic names for the following complex ethers. OCH3 O CH2CH3 Cl SP 18. 04 Provide structures for the following systematic names. Systematic name: meta-Bromopropoxybenzene Systematic name: 1-Isopropoxycyclopentene 18. 2 Synthesis of Ethers The Williamson Ether Synthesis R + O an alkoxide C X R SN2 an alkyl halide methyl & 1o best; X = Cl, Br, I, OTos O C ether productExample: O Na + Sodium phenoxide CH3 Br O CH3 Phenyl methyl e ther (anisole) + Na Br + X SP 18. 05 Complete the following reactions. CH3 CH3 C O Na + CH3 I + Na I CH3 CH3 CH3 C CH3 I + Na O CH3 + Na I SP 18. 06 Provide the suitable alkoxide and alkyl halide necessary to produce 2-ethoxy-2-methyl butane in good yield. CH3 CH3 CH2 C O CH3 CH2 CH3 + Na Br 8. 4 Oxymercuration Intermediates †¢ For laboratory-scale hydration of an alkene †¢ †¢ Use mercuric acetate in THF followed by sodium borohydride Markovnikov orientation – via mercurinium ion Alkoxymercuration of Alkenes General Reaction: R C C 2) NaBH4 H C R EtherAlkene RO Step #1 RO C 1) Hg(OAc)2, ROH H g OA c C C Step #2 R + HOAc Markovnikov addition SP 18. 07 Complete the following reactions by displaying the final major organic product. H C 1) Hg(OAc)2, CH3OH H C 2) NaBH4 H CH3 CH3 C C H CH3 1) Hg(OAc)2, CH3OH 2) NaBH4 SP 18. 08 Specify the alkene and alcohol needed to produce the following ether. Alcohol OCH2CH3 1) Hg(OAc)2, CH3 2) NaBH4 Alkene 18. 3 Reactions of Ethe rs: Acidic Ether Cleavage General Reaction: HX C O C C OH + X C (strong acid) Ether Alcohol Alkyl halide SP 18. 09 Predict the product for the following ether-cleavage reaction. CH3 CH3 C O CH3 HBr CH2CH3 8. 4 Reactions of Ethers: Claisen Rearrangement O OH 1,3 O to C shift Thermodynamically more stable o 250 Allyl phenyl ether C9H10O ortho-Allyl phenol C9H10O Mechanism (involves six-membered transition state): 1 O TS 2 3 1 O 2 H keto-enol tautomerization 3 O H SP 18. 10 Predict the structure for the following Claisen rearrangement. O o 250 2-Butenyl phenyl ether C10H12O 18. 5 Cyclic Ethers: Epoxides (2 methods) General Reaction 1: O C C + R Alkene C O O O O C H A peracid C An epoxide R C O A carboxylic acid Specific Example 1: O Cl C O O H m-CPBA o H O O + CH2Cl2, 25 C H 1,2-Epoxycycloheptane Cl H C O H 18. Cyclic Ethers: Epoxides (2 methods) General Reaction 2: C OH X2, H2O C C C X A halohydrin Alkene O NaOH H2O C + H2O + NaX C An epoxide Review Section 7. 3 Specific Example 2: H CH3 C C H CH3 cis-2-Butene Br2 H2O H CH3 Br C OH C H CH3 NaOH H2O O HC CH3 C H + H2O + NaBr CH3 meso-2,3-Dimethyl-oxirane (or cis-2,3-epoxybutane) SP 18. 11 Fill in the appropriate intermediates showing the correct stereochemistry. H CH3 C C CH3 Br2 NaOH H H2O H2O trans-2-Butene + H2O + NaBr 18. 6 Reactions of Epoxides: Ring-Opening General epoxide structure: O C Since each atom is sp3 there is considerable angle strain in the epoxide ring-system.C Acidic Conditions: Epoxide opening under acidic conditions (aqueous acid) yields 1,2-diols General Reaction: H H O O C H C HO C H2O An epoxide C OH A 1,2-diol (glycol) H O C H C + O H H O C + C H O H H O H Specific Example (using symmetrical epoxide): H + H H3O OH H2O OH O H H trans-1,2-Cyclohexanediol SP 18. 12 Predict the correct structure of the product diol showing the correct stereochemistry. O H CH3 C C CH3 H trans-2,3-epoxybutane H3O+ H2O Note: Epoxide opening under anhydrous acidic conditions yields halohydrins. Specific Example ( 2 ° and 1 ° carbons): o 1 carbon o 2 carbon O CH3 H C C H H 1,2-EpoxypropaneOH HCl Et2O CH3 C Cl CH2 Cl + CH3 H 1-Chloro-2-propanol (90%) C CH2 OH H 2-Chloro-1-propanol (10%) SP 18. 13 Using the above model predict the major halohydrin. O H C H C HCl H Et2O O H C C H H HCl OH C Et2O H Cl CH2 Cl + C CH2 OH H Explanation: In cases where a 2 ° carbon and a 1 ° carbon form the epoxide ring, the major halohydrin product will be the one where the incipient alcohol is 2 ° and the halide is 1 °. Upon protonation of the epoxide oxygen the halide ion simple attacks the less-hindered 1 ° carbon with a greater frequency to give the major regioisomer. Specific Example (3 ° and 1 ° carbons): SP 18. 4 Using the above model predict the major halohydrin. Circle one. O C C H H HCl OH C Et2O + C H Cl Cl H C OH C H H Explanation: In cases where a 3 ° carbon and a 1 ° carbon form the epoxide ring, the major halohydrin product will be the one where the incipient alcohol is 1 ° and the halide is 3 °. Upon protonation of the epoxide oxygen the halogen attacks the more-stabilized (same as moresubstituted) carbon atom to give the major regioisomer described. Basic Conditions: Note: Nucleophile will always attack least-hindered position. Specific Example: o 3 carbon 1o carbon O CH3 CH3 C C H H OH NaOH H2O, ? CH3 C CH2 OH CH3 -Methyl-1,2-propanediol SP 18. 15 Predict the structure of the 1,2-diol from the following reaction. O C C H H NaOH H2O, ? Reaction with Grignard Reagents: O CH3 CH3 C C H H OH 1) CH3CH2MgBr, Et2O 2) (aq) NH4Cl CH3 C CH2 CH3 CH2 CH3 SP 18. 16 Predict the structure of the organic product from the following Grignardepoxide reaction. O H C C H H 1) CH3MgBr, Et2O 2) (aq) NH4Cl Reaction with a 1 ° amine: O H C OH CH2 H H2NCH2CH2CH3 C CH2 N CH2 CH2 H Reaction with a 2 ° amine: O H C OH H H3C CH2 + N H3C H C CH2 N CH3 CH3 CH3 SP 18. 17 Predict the structure of the epoxide and amine needed to generate the amino alcohol shown to the right.OH + C H3 C CH3 Epoxide Amine CH2 N H 18. 7 Crown Ethers †¢ Large rings consisting of repeating (-OCH2CH2-) or similar units †¢ Named as x-crown-y – x is the total number of atoms in the ring – y is the number of oxygen atoms – 18-crown-6 ether: 18-membered ring containing 6 oxygen atoms †¢ Central cavity is electronegative and attracts cations 18. 8 Thiols and Sulfides †¢ Thiols (RSH), are sulfur analogues of alcohols – Named with the suffix -thiol – SH group is called â€Å"mercapto group† (â€Å"capturer of mercury†) Thiols: Formation and Reaction †¢ From alkyl halides by displacement with a sulfur nucleophile such as –SH The alkylthiol product can undergo further reaction with the alkyl halide to give a symmetrical sulfide, giving a poorer yield of the thiol Sulfides †¢ Sulfides (RSR? ), are sulfur analogues of ethers – Named by rules used for ethers, with sulfide in place of ether for simple c ompounds and alkylthio in place of alkoxy Using Thiourea to Form Alkylthiols †¢ Thiols can undergo further reaction with the alkyl halide to give dialkyl sulfides †¢ For a pure alkylthiol use thiourea (NH2(C=S)NH2) as the nucleophile †¢ This gives an intermediate alkylisothiourea salt, which is hydrolyzed cleanly to the alkyl thiourea Oxidation of Thiols to Disulfides Reaction of an alkyl thiol (RSH) with bromine or iodine gives a disulfide (RSSR) †¢ The thiol is oxidized in the process and the halogen is reduced Sulfides †¢ Thiolates (RS? ) are formed by the reaction of a thiol with a base †¢ Thiolates react with primary or secondary alkyl halide to give sulfides (RSR’) †¢ Thiolates are excellent nucleophiles and react with many electrophiles Sulfides as Nucleophiles †¢ Sulfur compounds are more nucleophilic than their oxygen-compound analogues – 3p valence electrons (on S) are less tightly held than 2p electrons (on O) †¢ Sulfides react with primary alkyl halides (SN2) to give rialkylsulfonium salts (R3S+) Oxidation of Sulfides †¢ Sulfides are easily oxidized with H2O2 to the sulfoxide (R2SO) †¢ Oxidation of a sulfoxide with a peroxyacid yields a sulfone (R2SO2) †¢ Dimethyl sulfoxide (DMSO) is often used as a polar aprotic solvent 18. 9 Spectroscopy of Ethers †¢ Infrared: C–O single-bond stretching 1050 to 1150 cm? 1 overlaps many other absorptions. †¢ Proton NMR: H on a C next to ether O is shifted downfield to ? 3. 4 to ? 4. 5 – The 1H NMR spectrum of dipropyl ether shows this signal at ? 3. 4 – In epoxides, these H’s absorb at ? 2. 5 to ? 3. 5 in their 1H NMR spectra Carbon NMR: C’s in ethers exhibit a downfield shift to ? 50 to ? 80 Let’s Work a Problem When 2-methyl-2,5-pentanediol is treated with sulfuric acid, dehydration occurs and 2,2dimethyltetrahydrofuran is formed. Suggest a mechanism for this reaction. Which of the two ox ygen atoms is most likely to be eliminated and why? Answer First, there is protonation of the 3? –OH group, then a 3? carbocation is formed via loss of H2O. Then there is a nucleophilic attack of the carbocation by the 2nd –OH group. The 3? OH group is the one eliminated in all likelihood because its removal involves the formation of the more stable 3? carbocation.

Professional Leadership Journal – Narcissism and Machiavellianism Assessments

According to Nahavandi (2012), personalities with an elevated score on the scale are relaxed using several resources to accomplish their individual aims. The Machiavellian (Mach) scale measures an individual’s willingness to put self-interests and his or her preferences above the interests of the group and a person’s ability to influence and manipulate others for personal gain (Nahavandi, 2012).An individual with a high Mach score might have an absence of morality and truthfulness and both of these are necessities of operative management. As I completed the two different assessments, I was astonished by my results. I completed the Machiavellianism Assessment first, I scored a 23 and according to the text an average score is 24. My score shows that I score within the average range and that I am willing to put my self-interests aside and work as a group to reach a goal.I then completed the Narcissism assessments and scored a 118, which completely shook me, I’ve nev er considered myself a narcissistic person, but according to this data I am in fact that way. Narcissistic people love the idea of having power over people, but I am the total opposite, I would rather be a team player than a leader. But I do have some of the traits that constitute me as a narcissist. As a future public health leader, my Machiavellianism Assessment should be high and my Narcissism assessment should be low.In any public health situation being able to put your self-interests to the side helps to alleviate unwanted stress and it also helps to analyze the situation carefully. Nahavandi (2012) states that positive narcissistic leaders may have an exaggerated sense of self and entitlement, but they use their self-confidence, power, and influence to achieve goals, much the same way a moderate Machiavellian would. This seems more like what I strive to do in my life and in my work life.